Rotary thresher



(No Model.)

J. H. KOCH. ROTARY THRASHER.

. Patented May 19, 1896.

A roRNErS UNITED STATES PATENT OFFICE.

JERRY HENRY KOCH, OF LAMARTINE, PENNSYLVANIA.

ROTARY TH RESVH ER.

SPECIFICATION forming part of Letters Patent No. 560,586, dated May 19,1896.

Application filed November 13, 1895. Serial No. 568,843. (No model.)

To all whom it may concern:

Be it known that I, JERRY HENRY KOCH, residing at Lamartine,in thecounty of Olarion and State of Pennsylvania, have invented a new andImproved Rotary Thresher, of which the following is a specification.

My invention relates to improvements in that class of threshing-machineshaving a rotary cylinder and a blast-chamber for forcing the separatedstraw to the elevator or carrier devices; and it primarily has for itsobject to provide a machine of this kind of a simple and inexpensiveconstruction which can be easily manipulated and which will effectivelyserve for its intended purposes.

With this and other objects in view, which hereinafter will be referredto, the invention consists in the peculiar arrangement and novelcombination of parts, first described in detail, and then specilicallypointed out in the appended claims, reference being had to theaccompanying drawings, in which- Figure lis an end View of my improvedrotary thresher. Fig. 2 is a longitudinal section thereof. Fig. 3 is atransverse vertical section of the same, taken on the line 3 3 of Fig.2; and Fig. 4 is a partial horizontal section taken on the line 4 4 ofFig. 2.

In its practical construction my invention embodies asuitable frame A,mounted on the drive-wheels B B, upon the axles l) b of which are heldseat blocks C C, yhaving concave bearing portions in which the notary orinternal cylinder D has its ends seated, as most clearly shown in Fig.2.

E indicates an outer casing in which the rotary cylinder D is held, thediameters of such inner and outer bodies being relatively such that anair or grain collecting space F is provided, the bottom of which isdished, as shown at F', and provided in practice with an outlet f,having a suitable gate for the escape of the grain. At a point somewhatnear the rear end of the machine is disposed a blast-fan G, the air tubeor pipe of which isl held to discharge upwardly in a diagonal directionagainst the under face of the cylinder, so as to force the straw out atthe rear end onto an elevator or carrier H, of any suitableconstruction, which, if desired, may form a part of a stacker.

The cylinder D is in the nature of a continuous body, having a series ofslits or openings cl and having a number of exterior cuffs or bands D2,D3, and D4, having also openings d2 d3 d4, respectively. These bands aremade movable on the cylinder-body proper, so that the openings in suchbody can be regulated to suit the different grades of grain to bethreshed and also to form the said cylinder practically into sections,having openings of successively increasing grades, as clearly shown inFig. 2, it being manifestly clear that such an arrangement of parts willpermit of the ready adjustment of the cylinder for different grades ofthreshing. The interior Wall of the cylinder D has a series ofspirally-arranged ribs D5, inclined rearward to carry the straw rearwardas the said cylinder is rotated. At the front end the cylinder has anannular gear J, which is held to engage a worm-shaft K, journaledtransversely under the front end of the machine and provided with asprocket-wheel k2, which is geared by the chain 7e', with asprocket-wheel Z on the end of the toothed cylinder-shaft L, driven inthe ordinary manner.

The cylinder L is mounted at the base of the feed-platform M, and heldto operate over the concave fn, such cylinder and concave being of theordinary construction.

From the foregoing description, taken in connection with theaccompanying drawings, it is thought vthe complete operation of myinvention will be readily understood by those skilled in the art towhich it appertains.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

The combination of the rotary cylinder having perforations of uniformsize its entire length, a series of cuif or sleeve members havingperforations and adapted to be independently moved on the perforatedcylinder whereby to regulate the perforations therein into separateseries of dierent sizes, a snrrounding casing having a grain-receivingtrough, and a fan for driving the stalks and straw out at the rear andmeans for rotating the perforated cylinder all substantially as shownand for the purposes described.

lJERRY HENRY KOCH. Witnesses:

JOHN SCHMUCK, A. E. MIDDLETON.

IOO

